Stung by the move, Tesla rolled out an over the air update to the blue Model S 60D in the CR test fleet on Thursday, but that did not completely satisfy Consumer Reports. “We appreciate that Tesla has started to roll out standard automatic emergency braking on these vehicles,” said Jake Fisher, director of Auto Testing. But the update only works up to 28 mph. CR noted that Tesla often takes up to 9 days before it completes updating all eligible cars. It said it would wait until it was sure the update was fully implemented before re-evaluating its ratings.